Dump-car.



F. SEABERG.

- DUMP GAR.

APPLICATION FILED SE1-PT. 21, 1.90.91 l 1,01 1,254. Patented Dec. 12,1911.

l 6 SHEETS-SHEET l. @L

P. SEABBRG.

DUMP GAB.

APPLICATION FILED SEPT. 21,*1909,

Patented Deck 12, 1911.

6 SHEETS-SHEET 2 Patented Dec. 12, 1911.

P'. SBABERG.

DUMP GAR. Y APPLICATION FILED $1121.21, 190s.

P. SEABBRG.

DUMP GAB.

APPLICATION FILED SEPT.21, 1909.

PatentedDec. 12, 1911.

F. SEABERG.

Dump CAR. l PPLIUATION FILED SEPT. 2 1, 1909.

Patented Dec. 12, '1911.

6 slums-SHEET' 5.

Pg SABABERG.

"DUMP GA@ v APPLIOATION FILED SEPT. 21, 1909. 1

Patented Dec. 12, 1911.

SHEETS-SHEETS.'

FREDERICK sEABERe, oFcHIoAGo, ILLINOIS, Ass'IGNoR To NATIONAL yDI'IMP'can COMPANY, OFl CHICAGO, ILLINOIS,v

A CORPORATION 0F DUMP-CAR.

Specification of Letters Patent.

i,oirasa.

.To all whom-t may concern: Be it known that"I,"FREDERICx SEABERG, acitizen of the United States, residing at Chicago, in the county vofCook and State of Illinois, have invented certain new and usefulImprovements in Dump-Cars, of which the following -is -a specification.

The object of my inventionis to provide rimproved operating mechanismfor the 1o' doors of dump cars.

i I have illustrated the invention vas ap-y plied to anore car havingsloping ends and 'a central hopper bottom toward which the lower sideinclosing wals" also slope.

While the invention is particularly adaptedto this type of car, it willbeobvious that its utility is not restricted thereto, and that theprinciple of my invention, as. hereinafter described and' claimed, maybe applied to cars of other types.

- In the drawings-Figure 1 is across sectional view taken at about thecenter of the car and showing the operating mechanism. Fig. 2 is a Viewsimilar Ito Fig. 1,

showing the doors in open position. Fig.

3 is a view similar to-th'e preceding views,`

but for the sake `of clearness showing only p artzof the operatingcha-ins. .F ig. 4 isa view similar to Fig.v '3, 4but showing the`operating chains omittedl from that view. Fig. 5 is a plan view of thecar. .'Fig..6 is a fragmentary sideelevation.

The'body .of the-(car to which I have shown my invention appliedcomprises vertical side walls 1 and sloping ends 2. Plates 3 secured tothe'lower' parts of the side walls alsoqslopeginwardly .toward thecentral hopper opening, the inner parts of the sloping sections 3 beingbent vertically downward, as indicated at 4. The parts 3 and 1 .may beconstructed individually or -of separate plates,A asv illustrated. Thedump doors 5 in 'their closed position are horizontal and-'have upwardlyprojecting outer'edges, -which at their, upper extremities 6 are hingedto a xed part of the car.

Itwill be noted that the inward sloping.

side sections 3 in .connection with the lower part of the Vertical sides1, together with the planej of the door opening in this manfl thehorizontal members 7, form box girders extending along each side vof thecar, the. vertical parts of the doors. extending ner, aifull' opening ofthe doors may be se- 'doorswill be raised to closed purpose'.

ratenteaneaiaieii.- Application led September 2 1, 1909. Serial N o.518,854.`

cured without lowering thir inner edges tracks 9 beingsuspended byupward extensions 10 from a fixed -p'artv of the oar body.y The tracks9- incline downwardly toward the car sides and at their upperextremlties are provided with a horizontal section 11. It 'will' beapparent that as the shafts 8 tracks 9, thev doors 4will be permitted tomove to the open position illustrated in Fig.'4 2, and that -as theshaftsjare moved upwardly toward the center of the'car, the position, asillustrated in F igs.' 1', 3 and 41. i.

. In `order to impart the requisite ymove ment tothe operating shafts 8,'I provide move downwardly. along the extends transversely of the carfrom the lower extremity of', the hopper bottom to a point-'above theshaft 12, as clearly shown in Fig.. 6. This housing may consist ofvertical plates 14' and v15- connected by an inclined section 16 which.may be formed integrally with the `plate 15. ,"Ihe' shaft 12is'journaled in' vbrackets 17'seci`1red to the plate 14, and the ends ofthe shaft 1.2 may p'rojectslightly beyond-the car sides,where they maybe rotated by means of a wrench,

or otherwise, having a squared endiforthis Beneath the `shaft 12 andlsubstantially ,the same. plane therewith are sheaves 18 journaled upontrunnions'19 supported'by the plates 121-15. The sheaves 18 are prof'vided with arallel., chain' grooves. The shaft 12 ispreferablycontinuous across the car, thus operating both doors simultaneously, butif desired it is apparent thatitv i could be made in two partsmeetingat" the center of the car, thus providing" for operating thedoors separately. One 'of the grooves in "each of the sheaves' 18 .en-

gaged by a cable or chain'20 secured atits ends,as indicated at 21 and22, to the shaft 12 and intermediate its ends, as indicated at 23, tothe sheave 18.y Preferably, the shaft 12 is providedwith a spiral groove24 to 'guide the chain -in its winding' thereon. The opposite .ends ofthe chain 2O winds' upon opposite sides of the shaft 12 from which itwill-be apparent'that as the ico shaft is turned in one direction thesheave 18 will be rotated and when the shaft is rotated in the oppositedirection the sheave also will be rotated in the opposite direction.

As clearly shown in Fig.` 4, the second groove-in each of the sheaves 18is occupied by a'chain or cable 25 secured to the sheave at 26. Theopposite end of the chain 25 is secured to the operating shaft 8. ,lsclearly shown in Figs. 3 and Ll, each of v e sheaves 18 is provided'with several spur teeth 27 adapted to engage a spur wheel 28 xed to theshaft 8 when the latfrtrier rests upon the upper horizontal part 11 ofthe track 9. The track 5)-11 is provided with projecting pins or teeth28 which coact with the spur gear 28 Iupon the shaft 8. p

Upon reference to Figs. 3 and 4, it will be apparent that when the shaft12 is rotated in a direction to impart rotation to the sheaves 18 in thedirection indicated bythe arrows, the spur teeth 2i' acting upon thespur gears 28 will cause the shaft 8 to roll downwardly upon the track9. As soon as the shaft 8 reaches the inclined part 9 of the track theweight of the door and superimposed loadwill carry the shaft 8 to thebottom of theincline as illustrated in Fig. 2. During the movement ofthe shaft 8 downyward along the track. 9, the-engagement of the spurgear 28 with the teeth 28 will cause said shaft to rotate, therebywinding up the chain 25 upon the shaft 8 and unwinding the chain 20 fromthe centra-l part of the 'shaft 12 and winding the same about the outerpart thereof. The positions occupied by the different elements when thedoors are in'open position are illustrated in Fig.

v 2. Referring to F ig. 2, it will be apparent that when the shaft 12 isrotated in such direction as to cause the sheave 18 to turn in thedirection indicated bythe arrow, chain 25 will be wound up on saidsheave and unwound from the shaft 8. The turning of the shaft 8 causedby the unwinding of the chain 25 therefrom imparts rotation to saidshaft, whereupon the engagement of the spur gear 28 withvthe teeth 28causes the shaft 8 to travel upward along the track 9, rais- `ing thedoor 5 to closed position. In the closed position of the doors, theshafts 8 rest upon the horizontal part 11 of the track,

in which position the weight of and upon thedoors has no tendency tomove the shafts 8.

It will be noted that the chain 25 winds upon the shaft 8 in line withthe pitch circle ofthe gear 28. Otherwise stated, the winding drum 35upon the shaft 8 is of the same diameter as the vpitch circle ofthe gear28, by reason of this relation the spur 'teeth 27 acting upon thespur-gear 28 at the beginning of the door opening movement., as|

lshown in Fig. 4, inisuch manner that the chain 25 winds upon the shaft8 without slack or strain at the time the shaft 8 is being forced fromthe level track section 11 'by the spur teeth 27.

While the foregoing description and the dra-wings are confined to onespecific embodiment of my invention,.it will be apparent that theprinciple thereof maybe applied in mechanisms of different 'specificforms.

I claim:

1. In a car of theclass described, a power shaft, a sheave, gearingbetween said power shaft and sheave, a reciprocable door operatingshaft, and a winding cable connection between said sheaveandreciprocable shaft.

2. In a car of the class described, a power shaft, a counter shaft, adoor operatingshaft, andI winding' cable connections between saidshafts.l

3. In a car of the class described, a power shaft, a counter shaft, adoor operating shaft, winding cable' connections between said shafts,and means to cause said operating shaft to rotate when reciprocated andto reciprocate when rotated.

4. In a. car of the class described, a rotatable power shaft, arotatable and recip. rocable door operating shaft, a counter shaft,

winding cables connecting said-power shaft.

and counter shaft and connecting said counter shaft andoperating shaft,and means to cause said operating shaft to reciprocate when rotated andto rotate when reciprocated. f

` 5. In a car of the class described, a rotatable power shaft, arotatable and reciprocable door operating shaft, a counter shaft,

winding cables connecting said power shaft.

and counter shaft and connecting said counter shaft and operating shaft,a spur gearv upon said operatino` shaft, coacting teeth upon a fixedpart of the car, and means to cause said operating shaft to reciprocatewhen rotated and to rotate when reciprocated.

6. In a car of the class described, a power shaft, a. sheave. insubstantially the salne plane with said power shaft, a reciprocable dooroperating shaft extending at substantiallv a right angle to said powershaft, gearing between said power shaft and sheave and a winding chainconnection between said sheave and reciprocable shaft.

7. In a car of the class described, a power shaft, a sheave insubstantially the same plane with said power shaft, a reciprocabledooroperating shaft extending at substantially a right angle to saidpower shaft, gea ring between said power shaft and sheave, a windingchain connection between said sheave and reciprocable shaft, a supportfor said reciprocable operating shaft,means to cause said operatingshaft to rotate when ofthe hinge axis of said door, a sheave insubstantially the saine plane .withsaid shaft, a winding cable securedat its ends to said shaft and'at an intermediate point to thecircumference of said sheave, a. reciprocable operating shaft parallelto the hinge axis of Said door, and `a. wlnding cable secured to saidoperating shaft and to said sheave.

9. In a car of the class described, a hinged door, a power shaftextending transversely ofthe hinge axis of said door, a sheave insubstantially the same plane with said shaft,

awinding cable secured at its ends to said shaft and at an intermediatepoint to the circumference of said sheave, a reciprocable loperatingshaft parallel to the hinge axis of a v teeth upon said support.

said door, a winding cable secured to said operating shaft and to saidsheave, a support for said operating'shaft, a spur gear secured to saidoperating shaft, and coacting Y 10. In a car ofthe class described,doors hinged adjacent the sides thereof, a power shaft extendingtransversely of the car 30 above said doors, sheaves below andsubstantially in the vertical plane of said power shaft, a' housingaround said powerV shaft and sheaves and extending between the car`sides, supports inclining downwardly toward the sides of the car,reciprocable operating shafts between said doors and supports,

i w gearing between said power shaft and sheaves, winding cables securedto said sheaves and operating shafts, spur gears on said operatingshafts, and coacting teeth on f said supports.

v1.1. In a' car of the class described, doors hinged -adjacent the sidesthereof, a power shaft extendingl transversely of the car above saiddoors, sheaves below and substantially in the vertical plane of saidpower shaft, va housing around'saidpower shaft v'and sheaves andextending between the car sides, supports inclining downwardly towardthe sides of the car'and having horizontal sections 'adjacent the centerof the car, reciprocable operating shafts between said i doors andsupports, gearing between said power shaft and sheaves, winding cablessecured to said sheaves and operating shafts,

spur gears on said operating shafts, coacting teeth on said supports,and -teeth fixed to said sheaves andadapted to mesh with said spur gearswhen said operating shafts are raised to said horizontal sectionsof-said supports.-

ing a horizontal bottom section, said hori-v zontal bottom sectioncomprising a hinged drop door, an operating shaft carried by theunderframe ofthe car and serving to support the free edge of the doorwhen in closed position, a power shaft, a flexible connection betweensaid power shaft and operating shaft, and means for displacing theoperating shaft from its door supporting position vto permit the shaftto drop.

14. A car of the class described having a horizontal bottoni sectioncomprising a hinged: drop door, a shaft carried by the underframe ofthecar and serving to take the direct vertical thrust of the load on thedoor when the door is closed and to transmitthe load to the loadcarrying members of the car, an actuating device for said shaft, theactuating device including a flexible shaft raising element, and a gearmechanism to displace the shaft from its door supporting position.

15. A car of the class described having sloping ends and a centralhorizontal floor section, a hinged dump .door in said central section, ashaft beneath said door and serving to transmit the load on the doorwhen closed vertically tothe load carrying members of the car, a powershaft extending transversely of the car above said rstnamed shaft, and awinding cable power transmitting connection between said shafts. 16. Acar of the class described having a central unobstructed dischargeopening, doors hinged atopposite sides of said opening at points abovethe body of said doors, inclined tracks sloping downward from t-hecentral part of said opening, a bodily movable supporting shaft beneatheach door and supported on said tracks', means for moving said shaftsupwardly on said tracks to close said doors, and means for impartingmovement to said shafts in the opposite direction to release said doors.

In testimony whereof, I have subscribed my name.

, FREDERICK SEABERG.

Witnesses: WALTER A. SCOTT, f, HENRY A. PARKS.

